中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

592 records (took 0.024 seconds)

    IMPROVED NONLINEAR OPTICAL FIBRE METHOD OF ITS PRODUCTION AND USE THEREOF
    172.
    发明申请
    IMPROVED NONLINEAR OPTICAL FIBRE METHOD OF ITS PRODUCTION AND USE THEREOF 审中-公开
    改进的非线性光纤生产方法及其使用

    公开(公告)号：WO2003079074A1

    公开(公告)日：2003-09-25

    申请号：PCT/DK2003/000178

    申请日：2003-03-14

    Applicant: CRYSTAL FIBRE A/S ,  HANSEN, Kim, Per ,  FOLKENBERG, Jacob, Riis

    Inventor： HANSEN, Kim, Per ,  FOLKENBERG, Jacob, Riis

    IPC: G02B6/16

    CPC classification number: G02B6/02338 ,  C03B37/01217 ,  C03B37/0122 ,  C03B2203/10 ,  C03B2203/26 ,  C03B2203/30 ,  C03B2203/42 ,  G02B6/02238 ,  G02B6/02276 ,  G02B6/0228 ,  G02B6/02333 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/0238 ,  G02F1/365 ,  G02F2201/02

    Abstract: An optical fibre having a longitudinal direction and a cross-section perpendicular thereto, said fibre in a cross-section comprising: (a) a core region (11) having a refractive index profile with a highest refractive index n c , and (b) a cladding region comprising cladding fea­tures (10) having a centre-to-centre spacing, Λ, and a diameter, d, of around 0.4Λ or larger, wherein n c , Λ and d are adapted such that the fibre exhibits zero dis­persion wavelength of a fundamental mode in the wave­length range from 1530 nm to 1640 nm; a method of pro­ducing such a fibre; and use of such an optical fibre in e.g. an optical communication system, in an optical fibre laser, in an optical fibre amplifier, in an optical fibre Raman amplifier, in a dispersion compensator, in a dis­persion and/or dispersion slope compensator.

    Abstract translation: 一种具有纵向方向和与其垂直的横截面的光纤，所述光纤在横截面中包括：（a）具有折射率最高nc的折射率分布的芯区（11），和（b） 包层区，包括具有中心至中心间隔的包层特征（10），Lambd和约0.4Lambd或更大的直径d，其中nc，Lambd和d适于使得所述纤维表现出零色散波长 波长范围从1530 nm到1640 nm的基波模式; 制造这种纤维的方法; 并使用这种光纤。 光纤激光器中的光通信系统，光纤放大器中的光纤拉曼放大器，色散补偿器中的色散和/或色散斜率补偿器中的光通信系统。

    APPARATUS FOR PROVIDING TIMING JITTER TOLERANT OPTICAL MODULATION OF A FIRST SIGNAL BY A SECOND SIGNAL
    173.
    发明申请
    APPARATUS FOR PROVIDING TIMING JITTER TOLERANT OPTICAL MODULATION OF A FIRST SIGNAL BY A SECOND SIGNAL 审中-公开
    用于提供第二信号的第一信号的时序抖动光学调制的装置

    公开(公告)号：WO02075446A2

    公开(公告)日：2002-09-26

    申请号：PCT/GB0201199

    申请日：2002-03-15

    Applicant: UNIV SOUTHAMPTON ,  RICHARDSON DAVID JOHN ,  LEE JU HAN ,  IBSEN MORTEN ,  PETROPOULOS PERIKLIS ,  TEH PEH CHIONG

    Inventor： RICHARDSON DAVID JOHN ,  LEE JU HAN ,  IBSEN MORTEN ,  PETROPOULOS PERIKLIS ,  TEH PEH CHIONG

    IPC: G02F1/35 ,  H04B10/2507 ,  H04B10/18 ,  H04J14/02

    CPC classification number: H04B10/2507 ,  G02F1/3515 ,  G02F2201/02 ,  G02F2201/307

    Abstract: Apparatus for providing timing jitter tolerant optical modulation of a first signal (1) by a second signal (2), the first signal having a first wavelength (3), the second signal comprising a plurality of second signal pulses (4) having a second pulse shape (5) and a second wavelength (6), and the apparatus comprising a first signal input port (8), a second signal input port (9), a coupler (10), a grating (11) and a non-linear optical device (12), the apparatus being configured to direct the second signal (2) at the second signal input port (9) to the non-linear optical device (12) via the coupler (10) and the grating (11), and to direct the first signal (1) at the first signal input port (8) to the non-linear optical device (12); the grating (11) being a superstructured fibre Bragg grating that converts the second signal pulses (4) into intermediary pulses (13) each having an intermediary pulse shape (14); the intermediary pulse shape (14) being such that it provides a switching window (19) within the non-linear optical device (12).

    Abstract translation: 用于通过第二信号（2）提供第一信号（1）的定时抖动容忍光调制的装置，所述第一信号具有第一波长（3），所述第二信号包括多个第二信号脉冲（4），所述第二信号脉冲具有第二信号 脉冲形状（5）和第二波长（6），并且所述装置包括第一信号输入端口（8），第二信号输入端口（9），耦合器（10），光栅（11） 线性光学装置（12），该装置被配置为经由耦合器（10）和光栅（11）将第二信号输入端口（9）处的第二信号（2）引导到非线性光学装置（12） 并且将第一信号输入端口（8）处的第一信号（1）引导到非线性光学装置（12）; 光栅（11）是将第二信号脉冲（4）转换成具有中间脉冲形状（14）的中间脉冲（13）的超结构光纤布拉格光栅; 中间脉冲形状（14）使得其在非线性光学装置（12）内提供开关窗口（19）。

    OPTICAL FIBER
    176.
    发明申请
    OPTICAL FIBER 审中-公开
    光纤

    公开(公告)号：WO01002904A1

    公开(公告)日：2001-01-11

    申请号：PCT/JP2000/004328

    申请日：2000-06-30

    IPC: G02B6/02 ,  G02B6/036 ,  G02B6/10 ,  G02F1/355 ,  G02F1/365 ,  H01S3/30

    CPC classification number: G02B6/02004 ,  G02B6/02242 ,  G02B6/03627 ,  G02B6/105 ,  G02F1/3555 ,  G02F1/365 ,  G02F2201/02 ,  G02F2203/06 ,  H01S3/302

    Abstract: An optical fiber capable of producing white light with a sufficiently wide wavelength band and of stabilizing the polarized state. The optical fiber can produce white light in wavelength bands on both sides of a pumping light pulse inputted by a nonlinear phenomenon. A core (1) of the optical fiber is clad with a first clad (2), which is clad with a second clad (3). The ratio ( DELTA 2/ DELTA 1) between the relative refractive-index differences DELTA 1, DELTA 2 of the core (1) and the first clad (2) with reference to that of the second clad (3) is -0.4 to -0.85. The ratio of the outside diameter of the core (1) to that of the first clad (2) is 0.4 to 0.7. The relative refractive-index difference DELTA 1 is 0.6 to 1.2%. The transmission loss of light with a wavelength near 1.4 mu m is 10 Db/km or less. Stress imparting parts (4) for imparting stress to the core (1) are provided on both sides of the core (1) in the second clad (3) to make the fiber a constant polarization optical fiber. The shortest distance between the stress imparting parts (4) is 2.3 times or more the mode field diameter of the wavelength of the pumping light pulse.

    Abstract translation: 一种能够产生足够宽的波长带并稳定极化状态的白光的光纤。 光纤可以产生由非线性现象输入的泵浦光脉冲两侧的波长带的白光。 光纤的芯（1）被包覆有第二包层（3）的第一包层（2）包覆。 纤芯（1）和第一包层（2）相对于第二包层（3）的相对折射率差DELTA1，DELTA2之间的比率（DELTA 2 / DELTA 1）为-0.4至 - 0.85。 芯（1）的外径与第一包层（2）的外径的比为0.4〜0.7。 相对折射率差ΔTA1为0.6〜1.2％。 波长接近1.4μm的光的传输损耗为10Db / km以下。 在第二包层（3）中的芯（1）的两侧设置有用于对芯（1）施加应力的应力施加部（4），以使光纤成为恒定偏振光纤。 应力施加部（4）之间的最短距离是泵浦光脉冲的波长的模场直径的2.3倍以上。

    CARBON ISOTOPE ANALYSIS DEVICE AND CARBON ISOTOPE ANALYSIS METHOD
    177.
    发明公开
    CARBON ISOTOPE ANALYSIS DEVICE AND CARBON ISOTOPE ANALYSIS METHOD 审中-公开
    碳同位素分析装置与碳同位素分析方法

    公开(公告)号：EP3267180A1

    公开(公告)日：2018-01-10

    申请号：EP16758947.2

    申请日：2016-03-02

    Applicant: National University Corporation Nagoya University ,  Sekisui Medical Co., Ltd.

    Inventor： IGUCHI, Tetsuo ,  TOMITA, Hideki ,  NISHIZAWA, Norihiko ,  HIROTSU, Takahiro ,  YURUZUME, Satoshi ,  TERABAYASHI, Ryohei ,  OH-HARA, Toshinari ,  IDENO, Akira ,  SATO, Atsushi

    IPC: G01N21/3504 ,  G01N21/01 ,  G02F1/37

    CPC classification number: G01J3/0218 ,  G01J1/124 ,  G01J3/0208 ,  G01J3/42 ,  G01N21/01 ,  G01N21/3504 ,  G01N30/88 ,  G01N2030/8868 ,  G01N2201/06113 ,  G01N2201/08 ,  G02F1/3551 ,  G02F1/37 ,  G02F2201/02 ,  G02F2203/56

    Abstract: A carbon isotope analyzer 1 includes a carbon dioxide isotope generator 40 that includes a combustion unit that generates gas containing carbon dioxide isotope from carbon isotope, and a carbon dioxide isotope purifying unit; a spectrometer 10 including an optical resonator 11 having a pair of mirrors 12, and a photodetector 15 that determines the intensity of light transmitted from the optical resonator 11; and a light generator 20 including a light source 23, a first optical fiber 21 to transmit a light beam from the light source 23, a second optical fiber 22 for wavelength conversion, the second optical fiber 22 splitting from the first optical fiber 21 at a point and combining with the first optical fiber 21 at another point downstream of the splitting point, and a non-linear optical crystal 25 that generates light having the absorption wavelength of the carbon dioxide isotope on the basis of the difference in frequency between light beams transmitted through the optical crystal 25. The carbon isotope analyzer 1 is a simple and convenient apparatus that can analyze isotope 14 C.

    Abstract translation: 碳同位素分析仪1包括二氧化碳同位素发生器40和二氧化碳同位素净化单元，二氧化碳同位素发生器40包括产生含有来自碳同位素的二氧化碳同位素的气体的燃烧单元; 光谱仪10，其包括具有一对反射镜12的光学谐振器11和确定从光学谐振器11透射的光的强度的光电检测器15; 以及光发生器20，其包括光源23，传输来自光源23的光束的第一光纤21，用于波长转换的第二光纤22，第二光纤22从第一光纤21分离为 并且在分束点的下游的另一点处与第一光纤21结合，并且非线性光学晶体25基于透射的光束之间的频率差产生具有二氧化碳同位素的吸收波长的光 通过光学晶体25.碳同位素分析仪1是可以分析同位素14C的简单方便的装置。

    Saturable absorber for fiber laser mode-locking, fiber Bragg grating with a saturable absorption property and mode-locked fiber laser
    179.
    发明公开
    Saturable absorber for fiber laser mode-locking, fiber Bragg grating with a saturable absorption property and mode-locked fiber laser 审中-公开
    用于锁模光纤激光器饱和吸收器，光纤布拉格光栅具有一可饱和吸收特性和锁模光纤激光器

    公开(公告)号：EP2690724A3

    公开(公告)日：2016-11-30

    申请号：EP13177000.0

    申请日：2013-07-18

    Applicant: UAB "Ekspla"

    Inventor： Rusteika, Nerijus ,  Michailovas, Andrejus

    IPC: H01S3/11 ,  G02B6/02 ,  G02F1/35 ,  G02F1/365 ,  H01S3/067

    CPC classification number: H01S3/1118 ,  G02F1/3523 ,  G02F1/365 ,  G02F2201/02 ,  G02F2202/38 ,  H01S3/06745

    Abstract: A saturable absorber for fiber laser mode-locking comprises a single-mode optical fiber (1) having a fiber portion (2) which is tapered or in which at least one longitudinal groove or at least one transverse hole is formed. Said tapered fiber portion is coated with a composite bleachable material (3), or said grooves or holes are filled with said composite material. In order to broaden a range of applications of the saturable and to extend its service life, said composite bleachable material comprises an inorganic matrix with an index of refraction similar to an index of refraction of the optical fiber and a nonlinear material embedded into said inorganic matrix, wherein said nonlinear material possesses a nonlinear absorption property and bleaches when exposed to laser radiation of intensity from 5MW/cm 2 to 500MW/cm 2 , while a waist diameter and of said tapered fiber portion or a number of grooves or holes and their configuration are chosen to satisfy a condition that laser light while propagating in the saturable absorber experiences losses between 1% and 50%. The proposed saturable absorber can be used in a resonator of a mode-locked fiber laser or incorporated into a construction of a fiber Bragg grating.

Patent Agency Ranking